win/C#/frmPreview.cs

   1 /*  frmPreview.cs $\r
   2     This file is part of the HandBrake source code.\r
   3     Homepage: <http://handbrake.fr/>.\r
   4     It may be used under the terms of the GNU General Public License. */\r
   5 \r
   6 namespace Handbrake\r
   7 {\r
   8     using System;\r
   9     using System.Diagnostics;\r
  10     using System.IO;\r
  11     using System.Runtime.InteropServices;\r
  12     using System.Threading;\r
  13     using System.Windows;\r
  14     using System.Windows.Forms;\r
  15     using Functions;\r
  16 \r
  17     using HandBrake.ApplicationServices.Model;\r
  18     using HandBrake.ApplicationServices.Services;\r
  19     using HandBrake.ApplicationServices.Services.Interfaces;\r
  20 \r
  21     using QTOControlLib;\r
  22     using QTOLibrary;\r
  23 \r
  24     using MessageBox = System.Windows.Forms.MessageBox;\r
  25 \r
  26     /// <summary>\r
  27     /// The Preview Window\r
  28     /// </summary>\r
  29     public partial class frmPreview : Form\r
  30     {\r
  31         #region Private Variables\r
  32 \r
  33         /// <summary>\r
  34         /// The Main Window\r
  35         /// </summary>\r
  36         private readonly frmMain mainWindow;\r
  37 \r
  38         /// <summary>\r
  39         /// True if QT is not installed\r
  40         /// </summary>\r
  41         private readonly bool noQt;\r
  42 \r
  43         /// <summary>\r
  44         /// The encode queue\r
  45         /// </summary>\r
  46         private readonly IEncode encodeQueue = new Encode();\r
  47 \r
  48         /// <summary>\r
  49         /// What is currently playing\r
  50         /// </summary>\r
  51         private string currentlyPlaying = string.Empty;\r
  52 \r
  53         /// <summary>\r
  54         /// Play With VLC tracker\r
  55         /// </summary>\r
  56         private bool playWithVlc;\r
  57 \r
  58         /// <summary>\r
  59         /// A Thread for the video player\r
  60         /// </summary>\r
  61         private Thread player;\r
  62 \r
  63         #endregion\r
  64 \r
  65         /// <summary>\r
  66         /// Initializes a new instance of the <see cref="frmPreview"/> class.\r
  67         /// </summary>\r
  68         /// <param name="mw">\r
  69         /// The mw.\r
  70         /// </param>\r
  71         public frmPreview(frmMain mw)\r
  72         {\r
  73             try\r
  74             {\r
  75                 InitializeComponent();\r
  76             }\r
  77             catch (Exception)\r
  78             {\r
  79                 this.noQt = true;\r
  80 \r
  81                 int borderWidth = (this.Width - this.ClientSize.Width) / 2;\r
  82                 int titlebarAndBorder = this.Height - this.ClientSize.Height;\r
  83 \r
  84                 this.Height = toolBar.Height + titlebarAndBorder + 1;\r
  85                 btn_playQT.Enabled = false;\r
  86                 btn_playQT.Visible = false;\r
  87             }\r
  88 \r
  89             this.mainWindow = mw;\r
  90 \r
  91             cb_preview.SelectedIndex = 0;\r
  92             cb_duration.SelectedIndex = 1;\r
  93 \r
  94             cb_preview.Items.Clear();\r
  95             for (int i = 1; i <= Properties.Settings.Default.previewScanCount; i++)\r
  96             {\r
  97                 cb_preview.Items.Add(i.ToString());\r
  98             }\r
  99 \r
 100             cb_preview.SelectedIndex = 0;\r
 101 \r
 102             encodeQueue.EncodeStarted += this.EncodeQueueEncodeStarted;\r
 103             encodeQueue.EncodeCompleted += this.EncodeQueueEncodeEnded;\r
 104         }\r
 105 \r
 106         #region Delegates\r
 107         /// <summary>\r
 108         /// Update UI Delegate\r
 109         /// </summary>\r
 110         /// <param name="sender">\r
 111         /// The sender.\r
 112         /// </param>\r
 113         /// <param name="e">\r
 114         /// The e.\r
 115         /// </param>\r
 116         private delegate void UpdateUiHandler(object sender, EventArgs e);\r
 117 \r
 118         /// <summary>\r
 119         /// The Open Movie Handler\r
 120         /// </summary>\r
 121         private delegate void OpenMovieHandler();\r
 122         #endregion\r
 123 \r
 124         #region Event Handlers\r
 125         /// <summary>\r
 126         /// The encode has started\r
 127         /// </summary>\r
 128         /// <param name="sender">\r
 129         /// The sender.\r
 130         /// </param>\r
 131         /// <param name="e">\r
 132         /// The e.\r
 133         /// </param>\r
 134         private void EncodeQueueEncodeStarted(object sender, EventArgs e)\r
 135         {\r
 136             encodeQueue.EncodeStatusChanged += this.EncodeQueueEncodeStatusChanged;\r
 137         }\r
 138 \r
 139         /// <summary>\r
 140         /// The Enocde has ended\r
 141         /// </summary>\r
 142         /// <param name="sender">\r
 143         /// The sender.\r
 144         /// </param>\r
 145         /// <param name="e">\r
 146         /// The e.\r
 147         /// </param>\r
 148         private void EncodeQueueEncodeEnded(object sender, EventArgs e)\r
 149         {\r
 150             encodeQueue.EncodeStatusChanged -= this.EncodeQueueEncodeStatusChanged;\r
 151 \r
 152             try\r
 153             {\r
 154                 if (this.InvokeRequired)\r
 155                 {\r
 156                     this.BeginInvoke(new UpdateUiHandler(EncodeQueueEncodeEnded), new[] { sender, e });\r
 157                     return;\r
 158                 }\r
 159 \r
 160                 ProgressBarStatus.Visible = false;\r
 161                 lbl_encodeStatus.Visible = false;\r
 162 \r
 163                 if (!this.noQt)\r
 164                     btn_playQT.Enabled = true;\r
 165                 btn_playVLC.Enabled = true;\r
 166 \r
 167                 this.Text = this.Text.Replace(" (Encoding)", string.Empty);\r
 168 \r
 169                 // Get the sample filename\r
 170                 if (this.mainWindow.text_destination.Text != string.Empty)\r
 171                     this.currentlyPlaying =\r
 172                         this.mainWindow.text_destination.Text.Replace(".mp4", "_sample.mp4").Replace(".m4v", "_sample.m4v").\r
 173                             Replace(".mkv", "_sample.mkv");\r
 174 \r
 175                 // Play back in QT or VLC\r
 176                 if (!playWithVlc)\r
 177                     Play();\r
 178                 else\r
 179                     PlayVlc();\r
 180             }\r
 181             catch (Exception exc)\r
 182             {\r
 183                 Main.ShowExceptiowWindow("An Unexpected error has occured", exc.ToString());\r
 184             }\r
 185         }\r
 186 \r
 187         /// <summary>\r
 188         /// Encode status has changed\r
 189         /// </summary>\r
 190         /// <param name="sender">\r
 191         /// The sender.\r
 192         /// </param>\r
 193         /// <param name="e">\r
 194         /// The e.\r
 195         /// </param>\r
 196         private void EncodeQueueEncodeStatusChanged(object sender, HandBrake.ApplicationServices.EventArgs.EncodeProgressEventArgs e)\r
 197         {\r
 198             if (this.InvokeRequired)\r
 199             {\r
 200                 this.BeginInvoke(new EncodeProgessStatus(this.EncodeQueueEncodeStatusChanged), new[] { sender, e });\r
 201                 return;\r
 202             }\r
 203 \r
 204             lbl_encodeStatus.Text = e.PercentComplete + "%";\r
 205             ProgressBarStatus.Value = (int)Math.Round(e.PercentComplete);\r
 206         }\r
 207         #endregion\r
 208 \r
 209         #region Encode Sample\r
 210 \r
 211         /// <summary>\r
 212         /// Play with VLC\r
 213         /// </summary>\r
 214         /// <param name="sender">\r
 215         /// The sender.\r
 216         /// </param>\r
 217         /// <param name="e">\r
 218         /// The e.\r
 219         /// </param>\r
 220         private void PlayVlcClick(object sender, EventArgs e)\r
 221         {\r
 222             ProgressBarStatus.Visible = true;\r
 223             ProgressBarStatus.Value = 0;\r
 224             lbl_encodeStatus.Visible = true;\r
 225             playWithVlc = true;\r
 226             this.panel1.Visible = false;\r
 227             \r
 228             try\r
 229             {\r
 230                 if (!this.noQt)\r
 231                     QTControl.URL = string.Empty;\r
 232 \r
 233                 if (File.Exists(this.currentlyPlaying))\r
 234                     File.Delete(this.currentlyPlaying);\r
 235             }\r
 236             catch (Exception)\r
 237             {\r
 238                 MessageBox.Show(this, "Unable to delete previous preview file. You may need to restart the application.",\r
 239                                 "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
 240             }\r
 241 \r
 242             btn_playQT.Enabled = false;\r
 243             btn_playVLC.Enabled = false;\r
 244             this.Text += " (Encoding)";\r
 245             int duration;\r
 246             int.TryParse(cb_duration.Text, out duration);\r
 247             string query = QueryGenerator.GeneratePreviewQuery(this.mainWindow, duration, cb_preview.Text);\r
 248             ThreadPool.QueueUserWorkItem(this.CreatePreview, query);\r
 249         }\r
 250 \r
 251         /// <summary>\r
 252         /// Encode and Play with QT\r
 253         /// </summary>\r
 254         /// <param name="sender">\r
 255         /// The sender.\r
 256         /// </param>\r
 257         /// <param name="e">\r
 258         /// The e.\r
 259         /// </param>\r
 260         private void PlayQtClick(object sender, EventArgs e)\r
 261         {\r
 262             playWithVlc = false;\r
 263             this.panel1.Visible = true;\r
 264             if (this.noQt)\r
 265             {\r
 266                 MessageBox.Show(this,\r
 267                                 "It would appear QuickTime 7 is not installed or not accessible. Please (re)install QuickTime.",\r
 268                                 "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 269                 return;\r
 270             }\r
 271             if (this.mainWindow.text_destination.Text.Contains(".mkv"))\r
 272             {\r
 273                 MessageBox.Show(this,\r
 274                                 "The QuickTime Control does not support MKV files, It is recommended you use the VLC option instead.",\r
 275                                 "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 276             }\r
 277             else\r
 278             {\r
 279                 ProgressBarStatus.Visible = true;\r
 280                 ProgressBarStatus.Value = 0;\r
 281                 lbl_encodeStatus.Visible = true;\r
 282                 try\r
 283                 {\r
 284                     QTControl.URL = string.Empty;\r
 285                     if (File.Exists(this.currentlyPlaying))\r
 286                         File.Delete(this.currentlyPlaying);\r
 287                 }\r
 288                 catch (Exception)\r
 289                 {\r
 290                     MessageBox.Show(this,\r
 291                                     "Unable to delete previous preview file. You may need to restart the application.",\r
 292                                     "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
 293                 }\r
 294 \r
 295                 btn_playQT.Enabled = false;\r
 296                 btn_playVLC.Enabled = false;\r
 297                 this.Text += " (Encoding)";\r
 298                 int duration;\r
 299                 int.TryParse(cb_duration.Text, out duration);\r
 300                 string query = QueryGenerator.GeneratePreviewQuery(this.mainWindow, duration, cb_preview.Text);\r
 301 \r
 302                 ThreadPool.QueueUserWorkItem(this.CreatePreview, query);\r
 303             }\r
 304         }\r
 305 \r
 306         /// <summary>\r
 307         /// Create the Preview.\r
 308         /// </summary>\r
 309         /// <param name="state">\r
 310         /// The state.\r
 311         /// </param>\r
 312         private void CreatePreview(object state)\r
 313         {\r
 314             // Make sure we are not already encoding and if we are then display an error.\r
 315             if (encodeQueue.IsEncoding)\r
 316             {\r
 317                 MessageBox.Show(\r
 318                     this,\r
 319                     "Handbrake is already encoding a video!",\r
 320                     "Warning",\r
 321                     MessageBoxButtons.OK,\r
 322                     MessageBoxIcon.Warning);\r
 323 \r
 324                 return;\r
 325             }\r
 326 \r
 327             QueueTask task = new QueueTask((string)state);\r
 328             encodeQueue.Start(task, false);\r
 329         }\r
 330 \r
 331         #endregion\r
 332 \r
 333         #region Playback\r
 334 \r
 335         /// <summary>\r
 336         /// Play the video back in the QuickTime control\r
 337         /// </summary>\r
 338         private void Play()\r
 339         {\r
 340             this.player = new Thread(OpenMovie) { IsBackground = true };\r
 341             this.player.Start();\r
 342         }\r
 343 \r
 344         /// <summary>\r
 345         /// Play the video back in an external VLC Player\r
 346         /// </summary>\r
 347         private void PlayVlc()\r
 348         {\r
 349             // Launch VLC and Play video.\r
 350             if (this.currentlyPlaying != string.Empty)\r
 351             {\r
 352                 if (File.Exists(this.currentlyPlaying))\r
 353                 {\r
 354                     // Attempt to find VLC if it doesn't exist in the default set location.\r
 355                     string vlcPath;\r
 356 \r
 357                     if (8 == IntPtr.Size ||\r
 358                         (!String.IsNullOrEmpty(Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432"))))\r
 359                         vlcPath = Environment.GetEnvironmentVariable("ProgramFiles(x86)");\r
 360                     else\r
 361                         vlcPath = Environment.GetEnvironmentVariable("ProgramFiles");\r
 362 \r
 363                     vlcPath = vlcPath != null\r
 364                                   ? vlcPath + @"\VideoLAN\VLC\vlc.exe"\r
 365                                   : @"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe";\r
 366 \r
 367                     if (!File.Exists(Properties.Settings.Default.VLC_Path))\r
 368                     {\r
 369                         if (File.Exists(vlcPath))\r
 370                         {\r
 371                             Properties.Settings.Default.VLC_Path = "C:\\Program Files (x86)\\VideoLAN\\VLC\\vlc.exe";\r
 372                             Properties.Settings.Default.Save(); // Save this new path if it does\r
 373                         }\r
 374                         else\r
 375                         {\r
 376                             MessageBox.Show(this,\r
 377                                             "Unable to detect VLC Player. \nPlease make sure VLC is installed and the directory specified in HandBrake's options is correct. (See: \"Tools Menu > Options > Picture Tab\") ",\r
 378                                             "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 379                         }\r
 380                     }\r
 381 \r
 382                     if (File.Exists(Properties.Settings.Default.VLC_Path))\r
 383                     {\r
 384                         string args = "\"" + this.currentlyPlaying + "\"";\r
 385                         ProcessStartInfo vlc = new ProcessStartInfo(Properties.Settings.Default.VLC_Path, args);\r
 386                         Process.Start(vlc);\r
 387                     }\r
 388                 }\r
 389                 else\r
 390                     MessageBox.Show(this,\r
 391                                     "Unable to find the preview file. Either the file was deleted or the encode failed. Check the activity log for details.",\r
 392                                     "VLC", MessageBoxButtons.OK, MessageBoxIcon.Warning);\r
 393             }\r
 394         }\r
 395 \r
 396         /// <summary>\r
 397         /// QT control - Open the file\r
 398         /// </summary>\r
 399         [STAThread]\r
 400         private void OpenMovie()\r
 401         {\r
 402             try\r
 403             {\r
 404                 if (InvokeRequired)\r
 405                 {\r
 406                     BeginInvoke(new OpenMovieHandler(OpenMovie));\r
 407                     return;\r
 408                 }\r
 409                 QTControl.URL = this.currentlyPlaying;\r
 410                 QTControl.SetSizing(QTSizingModeEnum.qtControlFitsMovie, true);\r
 411                 QTControl.URL = this.currentlyPlaying;\r
 412                 QTControl.Show();\r
 413 \r
 414                 this.ClientSize = QTControl.Size;\r
 415                 this.Height += toolBar.Height;\r
 416             }\r
 417             catch (COMException ex)\r
 418             {\r
 419                 QTUtils qtu = new QTUtils();\r
 420                 Main.ShowExceptiowWindow("Unable to open movie.", ex + Environment.NewLine + qtu.QTErrorFromErrorCode(ex.ErrorCode));\r
 421             }\r
 422             catch (Exception ex)\r
 423             {\r
 424                 Main.ShowExceptiowWindow("Unable to open movie.", ex.ToString());\r
 425             }\r
 426         }\r
 427 \r
 428         #endregion\r
 429 \r
 430         /// <summary>\r
 431         /// Remove any subscribed events then close.\r
 432         /// </summary>\r
 433         /// <param name="e">\r
 434         /// The e.\r
 435         /// </param>\r
 436         protected override void OnClosing(System.ComponentModel.CancelEventArgs e)\r
 437         {\r
 438             encodeQueue.EncodeStarted -= this.EncodeQueueEncodeStarted;\r
 439             encodeQueue.EncodeCompleted -= this.EncodeQueueEncodeEnded;\r
 440             base.OnClosing(e);\r
 441         }\r
 442     }\r
 443 }